Well after tons of searching on this site as well as the www, I have found a solution to my sticky/gunky button problem in my 08 GT. The parts are: Patience, some DIY know how for disassembly and reassembly of internal parts and... Turtle Wax Bug and Tar remover. Check out the before and afters attached. Simply spray the B&T remover, let sit for 1 - 5 min depending on how serious the issue is and wipe off with a microfiber cloth or similar type rag. Some buttons took one swipe while others such as the button dash took a few spray and wipes. No damage to the plastic or emblems on the buttons. You must disassemble as much as possible or else you'll be smearing the rubbery coating around and into crevices that could potentially lock up the button functionality.